1. A polite remark uttered after the end of a round, game, or other measured interval to indicate that a match was fair and enjoyable. Usually uttered collectively by the occupants of a game server. The opposite of BG

2. A condescending remark, often uttered by somebody who does not know meaning 1, and is simply repeating what others have told them.

1) Phrase said at the end of a match, either online or in person. Means "Good Game", and indicates one of two things: Either it was truly a good, fairly played and close match, or one team got slaughtered.

2) Used as an insult. Either in the aformentioned way, or used to insult someone who has preformed an incredibly stupid act.

1a) *Red team wins, 50 to 47*
Red Team: GG
Blue Team: GG

1b) *Blue team wins, 50 to 7*
Blue Team: GG!
Red Team: Shut it.

2) *Doctor Olayer falls off edge of map.*
TFox: GG.
Olayer: STFU.

*Guy accidentally dumps mustard on the shirt of a cheerleader he likes.*
Friends: GG. G-Fucking-G

Overused to the point of vulgarity abbreviation intended to stand for "good game." When people say it no matter what (especially when the winners say it), it dilutes the phrase to the point of meaninglessness. They might as well just say "hahah we kicked your asses."

Come on people, if it was a good game, say "damn that was a good game."

If it was shitty or merely mediocre, don't dilute a phrase that could be used as a compliment if it didn't mean jack squat.

<Everyone on winning team> gg
<Cowclops> Shut the FUCK up. That was NOT a good game. You fucking slaughtered us. YOU played well, but we did not, so don't patronize us with halfassed "pleasantries" when you're really just being dingleberries.

phrase used in multiplayer computer games meaning "good game." if two or more players have fought a good, hard battle, a "gg," usually first uttered by the losing player, is a polite way of admitting a loss. usually, the winning player follows with another "gg", meaning, "yes, good game."
however, if followed by a rude comment, such as "gg bitch," it means the opponent thinks he has won, or has no respect. some ruder gosu players sometimes will say, "gg", followed by "no re" meaning, no rematch, you're too weak for me.

Remark and conclusive statement said usually at the end of an video game round. A show of sportsmanship usually from the winning team.

-Slang-

Can be used in a derogatory way to mock someone outside of a video game, including yourself. Usually done after someone makes a fool of themselves during an argument or verbal confrontation of some sort or when a person using this remark, clearly wins pretty much anything; game, debate, discussion, valid point, etc.

In contrary it can also be used to show inferiority or just loss at something. In this case its complete loss of hope for something, or just giving up entirely on something stating, it was a good run but its over, GG (good game). A common synonym of this would be, Fml, Fuck my life.